In:
Scientific Reports, Springer Science and Business Media LLC, Vol. 6, No. 1 ( 2016-05-17)
Abstract:
Tailoring the morphology of Pt nanocrystals (NCs) is of great concern for their enhancement in catalytic activity and durability. In this article, a novel synthetic strategy is developed to selectively prepare porous dendritic Pt NCs with different structures for oxygen reduction reaction (ORR) assisted by NH 3 gas and halides (F − , Cl − , Br − ). The NH 3 gas plays critical roles on tuning the morphology. Previously, H 2 and CO gas are reported to assist the shape control of metallic nanocrystals. This is the first demonstration that NH 3 gas assists the Pt anisotropic growth. The halides also play important role in the synthetic strategy to regulate the formation of Pt NCs. As-made porous dendritic Pt NCs, especially when NH 4 F is used as a regulating reagent, show superior catalytic activity for ORR compared with commercial Pt/C catalyst and other previously reported Pt-based NCs.
Type of Medium:
Online Resource
ISSN:
2045-2322
Language:
English
Publisher:
Springer Science and Business Media LLC
Publication Date:
2016
detail.hit.zdb_id:
2615211-3
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